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Finding the Fourth Proportional to 22,691.81, 33,964.92 and 12,135.44

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Solution

The fourth proportional to 22,691.81, 33,964.92 and 12,135.44 is: 18,164.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,691.81 : 33,964.92 = 12,135.44 : x
  2. Step 2: Convert to fraction form
    22,691.81/33,964.92 = 12,135.44/x
  3. Step 3: Cross multiply
    22,691.81x = 33,964.92 × 12,135.44
  4. Step 4: Simplify right side
    22,691.81x = 412,179,333.68
  5. Step 5: Solve for x
    x = 412,179,333.68/22,691.81
  6. Step 6: Final answer
    x = 18,164.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.